# If the radius of the earth’s orbit around the sun is 150 million kilometers, what is the speed of the earth in its orbit in kilometers per hour ?

##### 1 Answer

Jun 6, 2018

I tried this:

#### Explanation:

We can use some relationships from Kinematics (rotational and linear):

1) linear (

2) angular velocity is the circumference described in time or:

where

In our case:

so

so that: